# Re: [R] Hilfeanfrage

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Mon 31 Oct 2005 - 07:36:43 EST

Dirk Eddelbuettel wrote:
> Thomas,
>
> On 30 October 2005 at 17:05, Thomas Herbst wrote:
> | Sehr geehrtes R-TEAM!
>
> The list operates in English as a casual look at the archives would have told
> you.
>
> | Wie Sie sehen, besteht die Variable "worldindex05r" aus 3 Spalten "V1, V2,
> | V3". Rechnen kann R aber nur mit den numerischen Werten (V2, V3). Das ist
> | mir klar!
> |
> | Wie kann ich nun gezielt einzelne "V´s" auswählen, z.b. für ein Histogramm?
>
> [ Question was how to subset columns of a data.frame or matrix ]
>
> You _really_ want to read 'An Introduction to R' -- which came with R
> installation, or an equivalent manual. There are lots of them, the
> http://www.r-project.org website and the mirrors of http://cran.r-project.org
> carry a couple free pdf manuals. As for your question:
>
> > skewness(worldindex05r[,c(V2,V3)])

Dirk, you forgot some quotes:

skewness(worldindex05r[,c("V2","V3")])

Best,
Uwe

> is one of several ways to select specific columns.
>
> | Wie kann ich einen Plot erstellen, z.B. mit V1 = Nur Datum auf der x-Achse
> | und V2(Kurse) oder V3(log.Renditen aus V2 ) auf der y-Achse?`eee
>
> [ How to plot x vs y ]
>
> One of several ways to plot one variable against another is
>
> > plot(worldindex05r\$V1, worldindex05r\$V2)
>
> How to take logarithms is left as an exercise to the reader ...
>
> | Dann würde ich noch gerne wissen, wo die LINEARE REGRESSION(einfach und
> | mehrfach) bei R zu finden ist?
>
> [ Where is linear regression, simple and multiple ]
>
> Had you read the manual, you would know that
>
> > help.search("linear regrqession")
>
> can provide a first lead, which can often be complemented by
>
> > RSiteSearch("linear regression")
>
> In this case you are out of luck because as statistics refers to this as a
> 'linear model', so
>
> > help(lm)
>
> is what you need.
>
> | Vielen Dank im voraus.
>
> It's a pleasure, but you now owe it to yourself to a) read some of the
> manuals and b) the posting guide for this list.
>
> | Thomas Herbst
> |
> |
> | Ein kleiner Nachtrag meinerseits: Die Hilfen von R sind für
> | "Nicht-Mathematiker" eher schwer zu erschließen und sie liegen leider nur
> | in englischer Sprache vor, obwohl das Programm selbst mehrsprachig
> | ist. Warum?
>
> [ R docs are hard for non-mathematicians, and missing in German ]
>
> This is a _volunteer_ project. Feel free to close some of the gaps by
> submitting a German language manual. I am sure someone would be glad a to
> proofread it for you.
>
> [ Statement about the state of the art, or lack thereof, in Banking deleted. ]
>
> Yes, some of us work in the same industry.
>
> Regards, Dirk
>

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Oct 31 07:47:42 2005

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